Filter
Top Products
450268-1 www.amdry.com 63
F. USING A MAGNEHELIC
When measuring such small air pressures, the U-tube is often not accurate enough. Such small differences
in pressure are most often measured by an inclined tube manometer or a Magnehelic pressure gage as
shown in Illustration #2.
ILLUS. #2
For convenience and accuracy, an instrument known as a Pitot tube is used with the gage. The Pitot
tube, as shown in Illustration #3, consists of two tubes – one within the other. The inner tube measures
the total pressure alone, while the outer tube measures the static pressure alone.
ILLUS. #3